A Rapid, Low Cost, Manual Fusion Sample Preparation Technique for Quantitative X-Ray Fluorescence Analysis

1984 ◽  
pp. 491-496 ◽  
Author(s):  
Gerald D. Bowling ◽  
Iris B. Ailin-Pyzik ◽  
David R. Jones
Keyword(s):  
Sample Preparation ◽  
Low Cost ◽  
Fluorescence Analysis ◽  
Preparation Technique ◽  
X Ray ◽  
Sample Preparation Technique

A Rapid, Low Cost, Manual Fusion Sample Preparation Technique for Quantitative X-Ray Fluorescence Analysis

1983 ◽  
Vol 27 ◽  
pp. 491-496
Author(s):  
Gerald D. Bowling ◽  
Iris B. Ailin-Pyzik ◽  
David R. Jones
Keyword(s):  
Raw Materials ◽  
Low Cost ◽  
Surface Preparation ◽  
Fluorescence Analysis ◽  
Preparation Technique ◽  
Muffle Furnace ◽  
X Ray ◽  
Fusion Device ◽  
Sample Preparation Technique

This study compares the quality of the fused samples obtained by three separate methods. The first set of samples was prepared by the method used at USGS in Denver and reported by Taggart and Whalberg (1). The second set was fused by our manual method and cast in graphite molds. The third set was fused in the Herzog HAG-12 automated fusion device.The manual fusion technique requires the use of a muffle furnace capable of 1100°C (2100°F) and graphite molds. No release agents such as KBr and LiBr are required since the disks release easily from the graphite. The 25mm diameter center of the “fire-polished” upper surface of the disk is used for analysis without further surface preparation. This method has been shown to be suitable for preparation of a wide variety of glasses and raw materials including burned dolomite, silicates* high zircon materials such as BCS-388, calcined alumina and alumina refractories.

SEM evaluation of the TEM cold-stage double-film specimen

1984 ◽  
Vol 42 ◽  
pp. 272-273
Author(s):  
Jayesh Bellare
Keyword(s):  
Spatial Distribution ◽  
Sample Preparation ◽  
Sample Thickness ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Liquid Sample ◽  
Thin Specimen ◽  
Sample Preparation Technique ◽  
Cold Stage ◽  
Film Specimen

Seeing is believing, but only after the sample preparation technique has received a systematic study and a full record is made of the treatment the sample gets.For microstructured liquids and suspensions, fast-freeze thermal fixation and cold-stage microscopy is perhaps the least artifact-laden technique. In the double-film specimen preparation technique, a layer of liquid sample is trapped between 100- and 400-mesh polymer (polyimide, PI) coated grids. Blotting against filter paper drains excess liquid and provides a thin specimen, which is fast-frozen by plunging into liquid nitrogen. This frozen sandwich (Fig. 1) is mounted in a cooling holder and viewed in TEM.Though extremely promising for visualization of liquid microstructures, this double-film technique suffers from a) ireproducibility and nonuniformity of sample thickness, b) low yield of imageable grid squares and c) nonuniform spatial distribution of particulates, which results in fewer being imaged.

Introduction of a Novel Sample Preparation Technique for the Failure Analysis of Silicon Integrated Photonics Modules

2019 ◽  
Author(s):  
Pradip Sairam Pichumani ◽  
Fauzia Khatkhatay
Keyword(s):  
Sample Preparation ◽  
Failure Analysis ◽  
Silicon Photonics ◽  
Cmos Technology ◽  
Single Step ◽  
Oxide Semiconductor ◽  
Disruptive Technology ◽  
Preparation Technique ◽  
Test Vehicle ◽  
Sample Preparation Technique

Abstract Silicon photonics is a disruptive technology that aims for monolithic integration of photonic devices onto the complementary metal-oxide-semiconductor (CMOS) technology platform to enable low-cost high-volume manufacturing. Since the technology is still in the research and development phase, failure analysis plays an important role in determining the root cause of failures seen in test vehicle silicon photonics modules. The fragile nature of the test vehicle modules warrants the development of new sample preparation methods to facilitate subsequent non-destructive and destructive analysis methods. This work provides an example of a single step sample preparation technique that will reduce the turnaround time while simultaneously increasing the scope of analysis techniques.

Sign in / Sign up

Export Citation Format

Share Document